Multiplication

This is much easier than addition and subtraction.

Worked example

Calculate 3/8   x   4/9

You can either multiply across the top and multiply across the bottom.

3	x	4	=	12	=	1
8		9		72		6

or 'cancel' first and then multiply (3 divides into 9 and 4 divides into 8).

3	x	4	=	1	x	1	=	1
8		9		2		3		6